Which of the following statements about DNA structure is false?
A: It is antiparallel.
B: It has a uniform diameter.
C: It is a double-stranded helix.
D: The 3´end is phosphorylated.
E: It is a right-handed helix.
Answer: D: The 3´end is phosphorylated.
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The majority of amoebas are found in the Amoebozoa. The rest are found in the
a. Rhizaria. b. Opisthokonts. c. Heterokonts. d. Alveolata. e. Archaeplastida.
A pinniped is observed as lacking external ears, and it appears to propel through the water using its hind flippers only. What kind of pinniped might this be?
a. Phocids b. Sirenia c. Eared seals d. Walruses
Lateral gene transfer means that phylogenetic analyses of different individual genes from the same set of organisms often yield results that are inconsistent with each other
What technique seems to avoid this problem and give us the clearest, most consistent view of the "tree of life"? A) the polymerase chain reaction (PCR) B) molecular clock analyses C) "shotgun" rRNA sequencing from environmental samples D) Bayesian phylogenetic reconstruction E) whole-genome phylogenetic analysis
All of the following are involved in the inflammatory response EXCEPT
A) antibodies. B) mast cells. C) histamine. D) basophils. E) phagocytes.